Spinal Anatomy

Question 1

Spinal arteries derived from which branches of subclavian arteries?

Answer 1

Vertebral aa.

Deep cervical aa.

Question 2

Spinal arteries derived from which branches of aorta?

Answer 2

Intercostal aa.

Lumbar aa.

Question 3

Cervical enlargement extends from spinal level ____ to ____ with greatest width at ___

Answer 3

C3
T2
C6

Question 4

Lumbar enlargement extends from spinal level ____ to ____ with greatest width at ___

Answer 4

L1
S3
S1

Question 5

Intermediolateral cell columns are found at levels ____

Answer 5

C8 - L2

Question 6

Levels at which presence of posterointermediate sulci

Answer 6

above T6

Question 7

Name the spinal level:

Large lateral corticospinal tract

Answer 7

C1/C2

Question 8

Name the spinal level:

Distinctive spinal accessory nucleus

Answer 8

C1/C2

Question 9

Name the spinal level:

Large lateral group of ventral horn motor neurons

Answer 9

C8

Question 10

Name the spinal level:

Dorsal group of ventral horn motor neurons that innervate intrinsic hand muscles

Answer 10

C8

Question 11

Name the spinal level:

Ventral group of ventral horn motor neurons that innervate upper limb muscles w/ origins on the trunk

Answer 11

C8

Question 12

Name the spinal level:

Beginnings of nucleus dorsalis of Clarke

Answer 12

C8

Question 13

Nucleus dorsalis of Clarke extends from ___ to ___ and is the origin of the ____ tract.

Answer 13

C8
L3/4
spinocerebellar tract

Question 14

Name the spinal level:

Round cylindrical configuration

Answer 14

T6/T7

Question 15

Name the spinal level:

Gray matter is relatively sparse

Answer 15

T6/T7

Question 16

Name the spinal level:

Complete disappearance of dorsal intermediate sulcus

Answer 16

T6/T7

Question 17

Intermediolateral cell column contain ___

Answer 17

Pre-ganglionic sympathetic neurons

Question 18

Name the spinal level:

Large anterior gray horns contain lateral and medial motor groups

Answer 18

L2/3

Question 19

Name the spinal level:

Flattened cylinder shape

Answer 19

Cervical levels

Question 20

Name the spinal level:

Dominance of gray matter

Answer 20

S2

Question 21

Name the spinal level:

Large lateral group of motorneurons

Answer 21

S2

Question 22

Name the spinal level:

Dorsal group of motorneurons innervate lower leg meuscles and intrinsic foot muscles

Answer 22

S2

Question 23

Name the spinal level:

Ventral group of motorneurons innervate perineal muscles

Answer 23

S2

Question 24

Name the spinal level:

Contains Onuf’s nucleus

Answer 24

S2

Question 25

Name the spinal level:

Absense of spinocerebellar tracts

Answer 25

S2